How to list all packages emerged on a system...

[fortressfarm]

Ladies and Gentlemen,

A few weeks ago my Gentoo laptop survived a sudden thunderstorm... so I thought. A few days later I noticed some executables missing. In the middle of trying to diagnose the problem, it crashed and attempted to reboot. The reboot failed, however, I can get to the disk with a gparted liveCD. Assuming I can fsck and mount the partition... How do I determine what packages were emerged on my system? That way I can rebuild to the point of failure.

Thanks in advance,
Otto

[alex.blackbit]

the worldfile (/var/lib/portage/world) lists the packages that you have explicitly installed.

[notHerbert]

If you can chroot in, then you could try this

Code: Select all

emerge -epv world > world.txt

Then browse the file with your favorite pager. This will list all installed packages in the order they would be re-installed.

[alex.blackbit]

notHerbert,

of course emerge -epv world lists _ALL_ installed packages, but i think fortressfarm will only be interested in the packages he explicitly installed, not the dependencies of them.

That way I can rebuild to the point of failure

makes me believe that he wants to start from scratch.
if you feed the list from world.txt to emerge on a fresh system, you will get either get a crowded worldfile be using

Code: Select all

for i in `cat world.txt`; do
    emerge $i
done

or nothing in worldfile by using

Code: Select all

for i in `cat world.txt`; do
    emerge -1 $i
done

the worldfile itself is enough to rebuild a system. and... of course it's a good idea to copy the configs and user data.

[hielvc]

If they still are there backup /var/lib/portage/world , /var/db/pkg and /etc/make.conf. to generate a list of all files

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find /var/db/pkg|awk -F "/" '$6 !="" {print $5"/"$6}'|sort -u > wrld_file.lst

the above gives a listing like this

• ....
  xfce-base/xfdesktop-4.4.2-r2
  xfce-base/xfwm4-4.4.2
  xfce-extra/exo-0.3.4
  xfce-extra/xfce4-appfinder-4.4.2
  xfce-extra/xfce4-cpugraph-0.4.0
  xfce-extra/xfce4-dict-0.3.0
  xfce-extra/xfce4-eyes-4.4.0
  xfce-extra/xfce4-mixer-4.4.2
  xfce-extra/xfce4-screenshooter-1.2.0

If you can run " emerge @system -e --with-bdeps y ". If not you need to get a stage3 and as the install manual tells you untar it to "/" and run "emerge @system -uDN --with-bdeps y " then " emerge @world --with-bdeps y -e ".

The problem with getting a stage3 is tha it some time wipes out /var/db/pkg. Right now it seems to be working. If this happens then you can use the world list to rebuild your system.

[Exil]

Code: Select all

qlist -IC | tr "\n" " " > packagelist

the easiest wat.

[hielvc]

As alex is saying you can feed emerge with your "world" file. What Ive found is that useing

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build="$( < world)" ;  emerge $build -1uDN

allows emerge to figure out the build order.

[hielvc]

Exil only if it works. Mine should work on most livecds, even non-gentoo ones.

[alex.blackbit]

of course there are a lot of ways to produce a list of all installed packages. here is my variant:

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$ find /var/db/pkg -mindepth 2 -maxdepth 2 | sed 's/^\/var\/db\/pkg\//=/'|sort

but i still get the idea. what do i need this list for? portage was made for resolving dependencies.
so /var/lib/portage/world should be sufficient for everything you want to do.

[notHerbert]

alex.blackbit

OK, but how can fortressfarm know where 'the point of failure' is ?

That's the tough part, for example, once while I was running 'prelink -amR', the power went out. What a mess! There seemed to be many many, maybe hundreds of 'points of failure', and the fastest way to fix it was emerge -e world.

Cheers